Home / 20,158.70-27,816.89-11,204.75

Finding the Fourth Proportional to 20,158.70, 27,816.89 and 11,204.75

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Solution

The fourth proportional to 20,158.70, 27,816.89 and 11,204.75 is: 15,461.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,158.70 : 27,816.89 = 11,204.75 : x
  2. Step 2: Convert to fraction form
    20,158.70/27,816.89 = 11,204.75/x
  3. Step 3: Cross multiply
    20,158.70x = 27,816.89 × 11,204.75
  4. Step 4: Simplify right side
    20,158.70x = 311,681,311.75
  5. Step 5: Solve for x
    x = 311,681,311.75/20,158.70
  6. Step 6: Final answer
    x = 15,461.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.